DOI: 10.1111/ele.12603
Scopus记录号: 2-s2.0-84966669940
论文题名: Negative density dependence is stronger in resource-rich environments and diversifies communities when stronger for common but not rare species
作者: Lamanna J.A. ; Walton M.L. ; Turner B.L. ; Myers J.A.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 6 起始页码: 657
结束页码: 667
语种: 英语
英文关键词: Density dependence
; Diversity maintenance
; Diversity-environment relationship
; Janzen-Connell hypothesis
; Natural enemies
; Resource availability
; Seedling and sapling recruitment
; Species coexistence
; Species relative abundance
; Temperate forest
Scopus关键词: biodiversity
; forest
; Missouri
; population density
; population dynamics
; seedling
; tree
; Biodiversity
; Forests
; Missouri
; Population Density
; Population Dynamics
; Seedlings
; Trees
英文摘要: Conspecific negative density dependence is thought to maintain diversity by limiting abundances of common species. Yet the extent to which this mechanism can explain patterns of species diversity across environmental gradients is largely unknown. We examined density-dependent recruitment of seedlings and saplings and changes in local species diversity across a soil-resource gradient for 38 woody-plant species in a temperate forest. At both life stages, the strength of negative density dependence increased with resource availability, becoming relatively stronger for rare species during seedling recruitment, but stronger for common species during sapling recruitment. Moreover, negative density dependence appeared to reduce diversity when stronger for rare than common species, but increase diversity when stronger for common species. Our results suggest that negative density dependence is stronger in resource-rich environments and can either decrease or maintain diversity depending on its relative strength among common and rare species. © 2016 John Wiley & Sons Ltd/CNRS. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107759
Appears in Collections: 气候减缓与适应
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作者单位: Department of Biology and Tyson Research Center, Washington University in St. Louis, St. Louis, MO, United States; Smithsonian Tropical Research Institute, Ancon, Balboa, Apartado, Panama
Recommended Citation:
Lamanna J.A.,Walton M.L.,Turner B.L.,et al. Negative density dependence is stronger in resource-rich environments and diversifies communities when stronger for common but not rare species[J]. Ecology Letters,2016-01-01,19(6)